LG 37LV370S Service Manual page 40

Standard Repair Process
LCD TV
No video
Normal
Normal audio
audio
N
Move to No
video/No audio
☞147
※Precaution
Always check/record S/W Version and White
Balance value before replacing the Main /Digital
Board
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Only for training and service purposes
A. Video error
Error
symptom
No video/Normal audio
☞144
Y
Check Back Light
On with naked eye
Check Power Board 24v output
☞145
☞146
Y Check Power
On
Board
12v,5v etc.
N
Normal
voltage
N
Repair Power
End
Board or parts
Replace Main Board
Established
2008. 2 . 1
date
Revised date
Replace Main Board
Y
Normal
OR
voltage
Replace T-con
Board or module
N
Repair Power
Board or parts
Re-enter White Balance value
Electronics 6-3
1/13
LGE Internal Use Onl